What does the Cursor Value on the AQ7275 Measure?

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The cursor value displays the level (dB) of the signal that is above the noise floor of the connected optical port. The noise floor is the dynamic range. This lets you know if you are approaching the maximum distance that you can test with the OTDR. As the cursor value approaches zero, the OTDR is nearing its maximum measurable distance, due to the condition of the fiber optic cable.

Please download the attached PDF for more information regarding the cursor value.

The AQ7275 is one of the best selling OTDRs in the world. Model lineup has been expanded to a total of 9 models to choose from with a dynamic range of up to 45dB . Wavelength capability spans from 850nm (MMF) to 1650nm (SMF). An impressive 0.8m event dead zone makes this model an excellent choice for FTTH and metro, core networks.